﻿//"The contents of this file are subject to the Mozilla Public License
//Version 1.1 (the "License"); you may not use this file except in
//compliance with the License. You may obtain a copy of the License at
//http://www.mozilla.org/MPL/

//Software distributed under the License is distributed on an "AS IS"
//basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
//License for the specific language governing rights and limitations
//under the License.

//The Original Code is TSharp.

//The Initial Developer of the Original Code is Mar3ek (http://mar3ek.wordpress.com).
//Portions created by Mar3ek are Copyright (C) 2010
//Mar3ek (http://mar3ek.wordpress.com). All Rights Reserved.

//Contributor(s): ______________________________________.

//Alternatively, the contents of this file may be used under the terms
//of the _____ license (the  "[___] License"), in which case the
//provisions of [______] License are applicable instead of those
//above.  If you wish to allow use of your version of this file only
//under the terms of the [____] License and not to allow others to use
//your version of this file under the MPL, indicate your decision by
//deleting  the provisions above and replace  them with the notice and
//other provisions required by the [___] License.  If you do not delete
//the provisions above, a recipient may use your version of this file
//under either the MPL or the [___] License."

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Xml.Linq;

namespace TSharp
{
    public partial class Twitter
    {
        #region Blocks

        #region BlockUser
        /// <summary>
        /// Blocks the user specified in the ID parameter as the authenticating user.
        /// </summary>
        /// <param name="screenName">The screen name of the user to be blocked</param>
        /// <exception cref="ArgumentNullException"></exception>
        /// <returns>Blocked user</returns>
        public TwitterUser BlockUser(string screenName)
        {
            if (string.IsNullOrEmpty(screenName)) throw new ArgumentNullException("screenName");

            var result = SendRequest(RequestMethod.Post, "https://api.twitter.com/1/blocks/create.xml", false,
                                        new KeyValuePair<string, string>("screen_name", screenName));
            var doc = XDocument.Parse(result);

            return ParseAuthor(doc.Element("user"));
        }

        /// <summary>
        /// Blocks the user specified in the ID parameter as the authenticating user.
        /// </summary>
        /// <param name="userId">The ID of the user to be blocked</param>
        /// <exception cref="ArgumentNullException"></exception>
        /// <returns>Blocked user</returns>
        public TwitterUser BlockUser(ulong userId)
        {
            if (userId < 1) throw new ArgumentNullException("userId");

            var result = SendRequest(RequestMethod.Post, "https://api.twitter.com/1/blocks/create.xml", false,
                                        new KeyValuePair<string, string>("user_id", userId.ToString()));
            var doc = XDocument.Parse(result);

            return ParseAuthor(doc.Element("user"));
        }

        /// <summary>
        /// Blocks the user specified in the ID parameter as the authenticating user.
        /// </summary>
        /// <param name="user">The user to be blocked</param>
        /// <exception cref="ArgumentNullException"></exception>
        /// <returns>Blocked user</returns>
        public TwitterUser BlockUser(TwitterUser user)
        {
            if (user == null) throw new ArgumentNullException("user");

            return BlockUser(user.ScreenName);
        } 
        #endregion

        #region UnblockUser
        /// <summary>
        /// Un-blocks the user specified in the ID parameter for the authenticating user.
        /// </summary>
        /// <param name="screenName">The screen name of the puser to be unblocked</param>
        /// <exception cref="ArgumentNullException"></exception>
        /// <returns>Unblocked user</returns>
        public TwitterUser UnblockUser(string screenName)
        {
            if (string.IsNullOrEmpty(screenName)) throw new ArgumentNullException("screenName");

            var result = SendRequest(RequestMethod.Post, "https://api.twitter.com/1/blocks/destroy.xml", false,
                                        new KeyValuePair<string, string>("screen_name", screenName));
            var doc = XDocument.Parse(result);

            return ParseAuthor(doc.Element("user"));
        }

        /// <summary>
        /// Un-blocks the user specified in the ID parameter for the authenticating user.
        /// </summary>
        /// <param name="userId">The ID of the user to be unblocked</param>
        /// <exception cref="ArgumentNullException"></exception>
        /// <returns>Unblocked user</returns>
        public TwitterUser UnblockUser(ulong userId)
        {
            if (userId < 1) throw new ArgumentNullException("userId");

            var result = SendRequest(RequestMethod.Post, "https://api.twitter.com/1/blocks/destroy.xml", false,
                                        new KeyValuePair<string, string>("user_id", userId.ToString()));
            var doc = XDocument.Parse(result);

            return ParseAuthor(doc.Element("user"));
        }

        /// <summary>
        /// Un-blocks the user specified in the ID parameter for the authenticating user.
        /// </summary>
        /// <param name="user">The user to be unblocked</param>
        /// <returns>Unblocked user</returns>
        /// <exception cref="ArgumentNullException"><paramref name="user" /> is <c>null</c>.</exception>
        public TwitterUser UnblockUser(TwitterUser user)
        {
            if (user == null) throw new ArgumentNullException("user");

            return UnblockUser(user.ScreenName);
        } 
        #endregion

        #region CheckBlock
        /// <summary>
        /// Returns whether the authenticating user is blocking a target user.
        /// </summary>
        /// <param name="screenName">The screen name of the potentially blocked user</param>
        /// <exception cref="ArgumentNullException"></exception>
        /// <returns>True if the authenticating user is blocking the target uses, otherwise false</returns>
        public bool CheckBlock(string screenName)
        {
            if (string.IsNullOrEmpty(screenName)) throw new ArgumentNullException("screenName");

            try
            {
                SendRequest(RequestMethod.Get, "https://api.twitter.com/1/blocks/exists.xml", true,
                                        new KeyValuePair<string, string>("screen_name", screenName));
                return true;
            }
            catch (TwitterException)
            {
                return false;
            }
        }

        /// <summary>
        /// Returns whether the authenticating user is blocking a target user.
        /// </summary>
        /// <param name="userId">The ID of the potentially blocked user</param>
        /// <exception cref="ArgumentNullException"></exception>
        /// <returns>True if the authenticating user is blocking the target uses, otherwise false</returns>
        public bool CheckBlock(ulong userId)
        {
            if (userId < 1) throw new ArgumentNullException("userId");
            try
            {
                SendRequest(RequestMethod.Get, "https://api.twitter.com/1/blocks/exists.xml", true,
                                        new KeyValuePair<string, string>("user_id", userId.ToString()));
                return true;
            }
            catch (TwitterException)
            {
                return false;
            }
        }

        /// <summary>
        /// Returns whether the authenticating user is blocking a target user.
        /// </summary>
        /// <param name="user">The user to be checked</param>
        /// <exception cref="ArgumentNullException"></exception>
        /// <returns>True if the authenticating user is blocking the target uses, otherwise false</returns>
        public bool CheckBlock(TwitterUser user)
        {
            if (user == null) throw new ArgumentNullException("user");
            return CheckBlock(user.ScreenName);
        } 
        #endregion

        #region GetBlockingUsers
        /// <summary>
        /// Returns a list of user objects that the authenticating user is blocking.
        /// </summary>
        /// <returns>List of users</returns>
        public Collection<TwitterUser> GetBlockedUsers()
        {
            var result = SendRequest(RequestMethod.Get, "https://api.twitter.com/1/blocks/blocking.xml", false);
            var doc = XDocument.Parse(result);

            // ReSharper disable PossibleNullReferenceException
            return new Collection<TwitterUser>(doc.Element("users").Elements("user").Select(ParseAuthor).ToList());
            // ReSharper restore PossibleNullReferenceException
        }

        /// <summary>
        /// Returns a list of user objects that the authenticating user is blocking.
        /// </summary>
        /// <param name="page">Specifies the page of results to retrieve</param>
        /// <returns>List of users</returns>
        public Collection<TwitterUser> GetBlockedUsers(uint page)
        {
            var result = SendRequest(RequestMethod.Get, "https://api.twitter.com/1/blocks/blocking.xml", false,
                                     new KeyValuePair<string, string>("page", page.ToString()));
            var doc = XDocument.Parse(result);

            // ReSharper disable PossibleNullReferenceException
            return new Collection<TwitterUser>(doc.Element("users").Elements("user").Select(ParseAuthor).ToList());
            // ReSharper restore PossibleNullReferenceException
        } 
        #endregion

        /// <summary>
        /// Returns a list of numeric user ids the authenticating user is blocking.
        /// </summary>
        /// <returns>List of user IDs</returns>
        public Collection<ulong> GetBlockedIds()
        {
            var result = SendRequest(RequestMethod.Get, "https://api.twitter.com/1/blocks/blocking/ids.xml", true);
            var doc = XDocument.Parse(result);

            // ReSharper disable PossibleNullReferenceException
            return new Collection<ulong>(doc.Element("ids").Elements("is").Select(idElement => ulong.Parse(idElement.Value)).ToList());
            // ReSharper restore PossibleNullReferenceException
        }

        #endregion
    }
}
